Electron-tube socket



Dec. 17, 1929. w. M. BRowER 1,739,748

' -ELEGTRON TUBE SOCKET Filed Aug. 26, 1926 TTF-,l

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UNITED STATES WILLIAM '1a. Eaownm or PALO ALTO, CALIFORNIA, AssIGNOa'rOFEDERAL PATENT OFFICE GRAPH COMPANY, Olli` SAN FRANCISCO, CALIFORNIA, ACORPORATION OF CALI- FORNIA ELEo'rnON-TUBE SOCKET f Application ledAugust 26, 1926. Serial No. 131,635.

My invention relates broadly to electron tube sockets and moreparticularly to the construction of a resiliently mounted electron tubesocket.

One ofthe. objects of my invention is to "provide a construction ofresiliently mounted electron tube socket which may be readily amanufactured inexpensively on a quantity production basis and whichisvery eiicient in its characteristic of preventing shocks and undesiredmechanical vibrations from being imparted to the electron tube mountedinthe socket.

Another objectof my invention is to pro' the setting up of microphonicnoises in they electron tubes mounted in thesockets.' v Another objectof my invention 1s topro- 30 vide a construction of electron tube.socket in which an insulated body lportion is pro-' videdl with aninteriorly extending rectangu- V lar recess with grooves extending fromthe outer peripheral'edge of the'said body portion into said recess foradmitting resilient contacts therethrough each capable of preventing thetransfer of shocks and mechanl- `cal vibrations to the elements of anelectron tube mounted in the socket. I

A Still another object of my invention resldes in the construction ofthe contact members of `the electron -tube socket for preventing thetransfer of undesired mechanical vibration to an electron tube carriedby thepwsocket- Other and further. objects of my'invention will be'understood from the specification hereinafter following'by reference tothe accompanying drawings in which:

Figure 1 1s a side elevation illustrating the 50 electron tube socketconstruction of my invention; Fig. 2 is a top plan view of the electrontube socket of my invention; Fig. 3 is a bottom plan viw showing thearrangement of contacts for the electron tube socket con;

struction of my invention; Fig. 4 is a crosssectional view taken throughthe electron vtube socket on line 4-4 of Fig. 2; Fig. 5 is an enlargedcross-sectional view showingone of the contact members of the electrontube socket constructionof my invention illustratv ying the pins of anelectron tube engaging one of the contacts in the socket; Fig. 6 is aerspective view of one of the contact mem ers which I provide for the,electron tube socket construction of my invention; Fig. 7 shows one ofthe limiting stops which I provide for controlling the movement of theelectron tubel socket under conditions of mechanical vibration; and Fig.8 isa fragmentary view. of a portion'of the socket illustrating one ofthe shoulders in the fecessin the tube socket for limiting the positionof the Contact members beneath the aperture of the base.

Referring to the drawings in more detail reference character 1illustrates a base member on which the electron-tube socket'con,

' struction of my invention is supported. Reflerence character 2indicates the insulated l portion. 2. Each of the contacts 11 areformed' as represented more clearly in Fig. 6 with an .I`

upwardly extending portion 24 forming a Contact or each pin of anelectron tube. Each contact mem er 11 is apertured at 16 and rivetedas-represented at 16 to the strip4 12 which is fastened tothe lowersurface of the insulated body portion 2. The strip'12 vis sethe?curelyanchored to the under surface of y body portion of the electrontube socket by means of'ledges 14 whichextend parallel to a diametricline through the body structure 2. The contact 11 is provide-d with ananchoring portion 18 which is apertured and fastened as represented at20 to a strip base member. The strip 11 is then offset with a shoulderat 22, the strip continuing as represented at. 19 enabling the socketto'be securely positioned with respect to the base by means of alimiting stop 21 which is secured overy the contact strip 11 and extendsover the peripheral flangeY 3 .of the 'electron tube socket. Thelimiting stop 21 is shown more clearly in Fig. 7 as provided with anaperture 21b through which bolt member 2,0 passes and cut away portion21l in which the contact 11 is firmly anchored.

Connections may. be made to each of the contacts with associatedamplification apparatus by soldering conductors to the portions 19 ofthe contact strips 11. v

Each of the Contact strips 11 .is vprovided with a V-shaped` oii'setportion 17 intermediate thev len h thereof .andthi's V-shaped r portionmay reely move within the grooved portions 4, 5, 6 and 7 preventing thetransfer of mechanical vibrations to the electrodes of an /electron tubecarried in the socket.

The interior. walls of the rectangular recess 23 are each provided withshort extended ledges 25 which limit the'movement of the upwardlyextending contact portion 24 in the direction of the pin 9 and in thismanner the upwardly extendino' portions 24 are maintained in alignment`tzielow the apertures 8 and prevented from forming an obstructionagainst the passage of the pins. projected and the contacts.\ Fig. 8shows clearly the` from the' electron tube base while at the same timegoodcontact is insured between the pins function of the shoulder 25 forpreventing movement'of contact members 24: beyond` a given limit beneathapertures 8.

my inventionhas been-*found to be very practical in its construction andsuccessful in operati n, and while I have described one of the preferredembodiments of my invention I desire that it beunderstood that modibemade and that no limita` fcations`- ma tions upon the invention areintended other than are imposed by the scope .of the appended claims.

What I claim as new and desire 'to secure vby Letters Patent oftheUnited States is as follows:

shell-and apertured on its .top for receiving vthe pin terminals of anelectron tube, a plura'lityof supports projecting inwardlyv fromopposite sides of said shell to a positiony be- '1. A resilientlymounted electron tube socket comprising an insulated body structureformed inthe shape of a hollow inverted low the apertured top of saidsocket, resilient he electron tubel socket construction -of* contactstrips secured to said supporting ture, said body structure being1slotted in positirons adjacent each of said metallic strip members,contacts corresponding in number to the number of said slots each ofsaid ycontents,\comprisin, );v a resilient strip of material anchored tothe extremity of the respective metallic strip member and being providedwith a V-shaped bend intermediate the ends of said strip member, saidV-shaped bends being arranged to project into said slots for permittingrelative movement of said elec- .tron tube socket under conditions ofshock vibration. 4

3. An electron tube socket construction comprising an insulated body`portion having a flat circular flange on the lower portion thereof,said body portion being slotted at a plurality of points about itsperiphery for providing entrances to the interiorv portion of said bodyportion, the top of said insulated body portion being apertured forreceiving the pin terminals of an electron tube, a plu- .f.

rality of inwardly directed supporting strip members anchored to saidbody portion in positions below said apertured top portion and resilientcontact members'secured to said and each relatively movable within saidlslots for preventing the transfer of shocks and jars strip members andpassing through said slots j to an electron tube carried said insulated4 'body portion.

In testimon whereof I aiix my siv'nature. yWILLIAM M. Rowan

